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CLC number: TP391.72

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Received: 2023-10-17

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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.4 P.593-595

http://doi.org/10.1631/jzus.2007.A0593


Vanishing torsion of parametric curves


Author(s):  JUHÁ,SZ Imre

Affiliation(s):  Department of Descriptive Geometry, University of Miskolc, Miskolc-Egyetemvá more

Corresponding email(s):   agtji@uni-miskolc.hu

Key Words:  Parametric curve, Torsion, Discriminant curve



Abstract: 
We consider the class of parametric curves that can be represented by combination of control points and basis functions. A control point is let vary while the rest is held fixed. It’s shown that the locus of the moving control point that yields points of zero torsion is the osculating plane of the corresponding discriminant curve at its point of the same parameter value. The special case is studied when the basis functions sum to one.

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